Patents by Inventor David J. Vess

David J. Vess has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Five-port monopulse antenna feed structure with one dedicated transmit port
    Patent number: 4712110
    Abstract: An antenna feed structure for use with a parabolic reflector in amplitude-comparison monopulse radar applications employs a dedicated transmit feed centered within a four-port receive array of conventional element spacing to eliminate the need for a circulator or other transmit/receive device while retaining satisfactory receive array performance. Isolation pins placed around the transmit port act to decouple it from the receive ports, and a double waveguide run to the transmit port reduces uneven heating and related phase imbalance in adjacent receive waveguide runs.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: December 8, 1987
    Assignee: General Dynamics, Pomona Division
    Inventors: John T. Branigan, David J. Vess